How often do you register a passenger vehicle in Connecticut?

Connecticut registers most passenger vehicles on a two-year (biennial) cycle. The standard passenger registration fee is charged for the full two years, so the per-year cost is roughly half the registration fee shown, plus annual local property tax.

What state fees does Connecticut add on top of registration?

Connecticut adds a Clean Air Act fee and a Greenhouse Gas Reduction fee to most passenger registrations, plus an Administrative or passport-to-parks fee. These are flat per-registration charges layered on the base registration fee.

Does Connecticut charge a property tax on cars?

Yes. Connecticut towns levy an annual motor-vehicle property tax based on the vehicle's assessed value and the town's mill rate. Motor-vehicle mill rates are capped statewide, but they still add a meaningful annual cost separate from DMV registration.

What is the Connecticut title fee?

Connecticut charges a one-time certificate of title fee when ownership is established or transferred. It is paid once when you title the vehicle, not every renewal, so leave it out when estimating a simple renewal cost.

Are these the exact fees I will pay?

These are estimates using Connecticut's published DMV fee schedule and a typical mill rate. Actual amounts vary by vehicle type, town mill rate, and any late fees, so confirm with the Connecticut DMV and your town assessor.

Connecticut Vehicle Registration Fee Calculator

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Registering a vehicle in Connecticut involves more than one charge: a biennial registration fee, a one-time title fee, plate fees, two state environmental surcharges, and a separate annual local property tax based on your town’s mill rate. This tool adds them up so you can budget the full cost.

How it works

Connecticut passenger vehicles register on a two-year cycle. The estimate sums the DMV fees and the local property tax:

DMV total   = registration (biennial) + title (if new) + plate (if new)
            + Clean Air Act fee + Greenhouse Gas fee + admin fee
propertyTax = assessed value × (mill rate ÷ 1000)   [annual]
total       = DMV total + propertyTax

The mill rate is your town’s motor-vehicle rate; one mill equals one dollar of tax per 1,000 dollars of assessed value. Connecticut caps the motor-vehicle mill rate statewide.

Example and notes

A passenger car with a new title and plates, in a town with a 32.46 mill rate and a 12,000 dollar assessed value: the DMV side adds the biennial registration, title, plate, and surcharge fees, while the property tax is 12,000 × 32.46 ÷ 1000 ≈ 389 dollars per year. Remember the registration fee covers two years, so divide it in half for a yearly comparison. Confirm exact figures with the Connecticut DMV and your local assessor.